Improvement in revolving scrapers



Revolving Scrapers.. f

No..l`52,203. -Paten:edJune16,1874.

wnksssss: ummm UNITED STATES PATENT OFFICE.

\VILKINS J. IVEBB, OF BUTLER, ILLINOIS.

IMPROVEMENT IN REVOLVING SCRAPERS.

' Specification forming part of Letters Pat-ent No. 152,203, dated June16, 1874 application filed April 18, 1974.

To all whom it may concern:

Be it known that I, WILKINs J. WEBB, of Butler, in the county ofMontgomery and State of Illinois, have invented a new and usefulImprovement in Revolving Scrapers, of which the following is aspecification:

The invention will first be fully described, and then pointed out in theclaims.

In the accompanying drawing, Figure l is a side elevation of theimproved scraper, partly in section, looking from the line w of Fig. 2.Fig. 2 is a top -or plan view.

Similar letters of reference indicate corresponding parts.

A is the scraper, which is of semicircular form, having circular heads BB. C is a surroundingframe,to which the scraper is attached by means ofgudgeons in the center of the heads, with suitable bearin gs in theframes, as seen in Fig. 2. I) is the tongue, which'is hinged to thecross-piece E of the frame. F is a box-guide attached to the forward endof the frame, through which the tongue passes, and in which it is madeadjustable as to height. The position of the scraper in reference to theframe is governed by the long lever G, which .extends back over thescraper, and is controlled by the attendant who walks behind. The tongueis released by means of the springplate H, which slides on the tonguebeneath the holding-plate I, and is thrown from shoul'i' ders in theboxfguide F, under which the spring forces it, by means of the curvedlever J whose fulcrum is at K, on the front part of the frame. Thislever J is operated from the rear by means of the rod connection L,which is attached to an arm on the rock-shaft m, which shaft rests onthe top of the rear end of the frame. This rod L is in two parts, whichare attached to the pvoted catch N. On the opposite side of the frameisasimilar pivoted catch, O, which is operated by the connecting-rod P,which is attached to an arm on the other end of the rock-shaft. Q is anupright vlever attached to the rock-shaft, by means of which the shaftis rocked or turned, andthe curved lever and catches are operated. At-

tached to the outside of each head of the scraper is a pin, R. (See Fig.2.) These pins come in contact with the catches N) O when the scraper isfilling, and when the scraper is loaded it is prevented from revolvingby the pins a'nd catches, until the load is conveyed to the desiredlocation to be dumped. When this point is obtaine'l, the catches arethrown from under the pin by turning the rock-shaft, which is done bydrawing back the lever Q. This allows the scraper to revolve and depositits load, and then to serve as the wheels of a cart in moving it back toits work.

I do not confine myself to the precise form and arrangement of all theparts of the scraper, as variations may be made in the details, wherebythe same or similar results may be obtained without departing from myinvention; nor do I confine myself to any particular size, proportion,or kind of materials.

The advantages are, that one man with this scraper is enabled to do thework of two men with the ordinary scraper, and to govern the scraper soas to skim the surface of the soil to any required depth, which two menwith the common scraper iind it diiiicult it not impossible to do.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. The combination, with the mechanism for allowingthe scraper to turn with its contents, of the strap L, lever J, and yokeF, whereby the tongue is unlocked and allowed to rise at the same timethat the scraper turns.

2. The combination of spring-catch H, plate I, and shouldered guard F,to enable the tongue to be locked and unlocked.

3. The combination of long lever Gr and endforked lever G', the formerpivoted to tongue and the latter to guide H, to enable the tongue to beforced down by the attendant.

WrLKrNs J. WEBB.

Witnesses:

GEORGE W. BROWN, Jr., J AMES JUDD.

